Birthday Cake Blondies! These fudgy and chewy blondies are infused with vanilla and a hint of almond extract, capturing that classic birthday cake flavor. Adding in Birthday Cake Oreos to enhance the nostalgic taste and finished with colorful sprinkles, these blondies are sure to bring joy the party!! The combo of rich, moist blondie base with the sprinkles, Oreos, and white chocolate is too much fun!

Blondies with white chocolate, birthday cake Oreos, and rainbow sprinkles.

Perfect for any occasion, these Birthday Cake Blondies are a fabulous treat. Whether you're hosting a potluck, looking for a fun weekend dessert, celebrating a birthday, or enjoying a game night with friends, these blondies are sure to be a hit! Their festive appearance and delish taste make them an irresistible crowd-pleaser, bringing a touch of celebration to any gathering. Easy to make and even easier to enjoy, these blondies are a must-try for anyone who loves a good, nostalgic treat!

Love blondies? Check out my pistachio white chocolate blondies, Oreo blondies, and smore blondies! If you're a fan of white chocolate, check out my white chocolate and blueberry muffins, and cookie pie!

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Why you'll love this recipe
Equipment
Ingredients
Substitutions
Instructions
Pro tips
FAQ
Storage
Related
📖 Recipe

Why you'll love this recipe

Flavor. This recipe is bursting with the classic birthday cake taste, thanks to the infusion of vanilla and a hint of almond extract. The Birthday Cake Oreos enhance the nostalgic, sweet flavor, taking you back to those cherished birthday celebrations. The colorful sprinkles add a fun spin on a classic!
Texture. The blondie base is perfectly fudgy and chewy, providing a rich and satisfying bite that melts in your mouth. The Oreos and white chocolate add another texture making them decadent!
Ease. This recipe is simple and straightforward, making it accessible for any level baker. This recipe uses common ingredients that you probably already have in your pantry, eliminating the need for a special trip to the store! The quick prep time makes it an excellent choice for last-minute treats or busy schedules, and its versatility means it's suitable for occasions, from potlucks to weeknight desserts, ensuring you always have a delish treat ready to share.

Equipment

This blondie cake recipe is in grams because using a kitchen scale for baking ensures precision and consistency. Measuring ingredients by weight is more accurate than using cups or spoons, which can vary depending on how they are filled. Using a scale is especially important when making blondies because it helps achieve the perfect fudgy texture. With a kitchen scale, you can be confident that you’re using the exact amount of each ingredient, leading to better and more reliable results every time you bake!

Using a metal baking pan is best for baking because it provides even heat distribution, ensuring that your baked goods cook uniformly without undercooked centers or overcooked edges! Metal pans conduct heat efficiently, which can reduce overall baking time and help achieve the perfect gooey center in recipes like blondies. They also promote browning, giving your baked goods desirable and beautifully caramelized edges.

Ingredients

Birthday cake Oreos: The Oreos are the most important ingredient as it infuses the blondies with that iconic birthday cake flavor. It gives the frosting a familiar, nostalgic taste that enhances the overall birthday cake experience! Golden Oreos can be used if you cannot find them.
Almond Extract and Vanilla: These extracts are a must for deepening the flavor profile of the blondies. Vanilla provides a warm, sweet, and rich base flavor that is classic in many baked goods. Almond extract adds a distinctive nutty note that complements the vanilla.
Dark Brown Sugar: Dark brown sugar is important for its molasses content, which adds a deeper, more robust sweetness to the blondies. It also contributes to the fudgy texture, ensuring the blondies are moist and chewy. The slight caramel undertone from the molasses enriches the overall flavor.
White Chocolate: High quality white chocolate is the only white chocolate that should be used in baking! High quality won't be too sweet and wont have stabilizers. My favorite is here.
Egg and Egg Yolk: Eggs provide structure and stability to the blondies, helping them rise and hold together. The additional egg yolk adds extra richness and moisture, contributing to the dense, fudgy texture that is characteristic of perfect blondies. The proteins in the eggs also help create a tender crumb, ensuring the blondies are not cakey.
Salt to Balance: Salt is a crucial ingredient in baking, even in sweet recipes. It enhances and balances the sweetness, ensuring the flavors are not overly sugary! A small amount of salt can heighten the other flavors, making the vanilla, almond extract, and brown sugar more pronounced.

See recipe card below for quantities.

Substitutions

Add more vanilla extract if you're not a fan of almond extract!
Golden Oreos instead of Birthday Cake Oreos would also be amazing! Golden Oreos have an amazing vanilla flavor.
Brown butter would add a nutty toasty flavor! Brown butter makes everything better!

This recipe has not been tested with other substitutions. These are just suggestions.

Instructions

Melted butter, brown sugar, and eggs in a bowl.

Step 1. Place the cooled down butter, almond extract, dark brown sugar, granulated sugar, vanilla, egg, and egg yolk in a medium bowl. Beat until combined and smooth.

Blondie batter in a white bowl on the counter.

Step 2.Whisk together the salt and flour, add it to the wet ingredients. Mix until combined.

Roughly chopped white chocolate and Oreos.

Step 3. Roughly chop the Oreos and white chocolate.

Birthday cake Oreos, white chocolate, and rainbow sprinkles being mixed into blondie batter.

Step 4. Fold in the Oreos, sprinkles, and white chocolate.

Blondie batter in a pan with Oreos and sprinkles on top.

Step 5. Pour into the pan, spreading it out evenly. Top with chopped Oreos and sprinkles (optional)

Birthday cake blondies with rainbow sprinkles on top.

Step 6. Bake for 22-25 minutes or until the top is set and a toothpick has a few moist crumbs. Let it cool in the pan on the counter before cutting.

Hint: When lining the pan with parchment paper, have it go up and over the sides for easy removal.

Pro tips

Do Not Over Bake: To ensure your blondies remain fudgy and chewy, avoid over baking. Insert a toothpick into the center of the blondies a few minutes before the suggested baking time is up. If it comes out with a few moist crumbs attached to it, they are perfectly baked. Over baking can lead to dry and crumbly blondies, keep a close eye on them.
Cool Before Cutting: Allow the blondies to cool completely in the pan before cutting. The results will be thick and chewy.
Roughly chop the Oreos: I don't love small pieces of Oreos, roughly chop them so they're on the bigger side so you really get a good bite of Oreo throughout the blondies.

FAQ

What are blondies?

Blondies are a type of dessert bar similar to brownies, but instead of cocoa or chocolate, they have a rich, vanilla-flavored base. They are made with flour, butter, sugar, and eggs, often including brown sugar for a caramel-like flavor. Blondies can be enhanced with various add ins such as chocolate chips, nuts, or other fun ingredients. They have a fudgy texture and buttery taste, making them a popular alternative to traditional chocolate brownies!

What kind of sprinkles should I use?

I like using jimmies! They are softer and easier on the teeth unlike other sprinkles. They have that colorful and long nostalgic shape!

Do I need an electric mixer?

The blondie base can be made with a whisk! The butter is melted so it doesn't need to be mixed for very long.

Storage

Room Temperature

Store in an airtight container for up to 3 days on the counter.

Freezer

Store in an airtight container in the freezer for up to 2 months.

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